Match the following related to the cardiac cycle. Column I Column II i Cardiac Cycle a 0 . 2 sec ii Atrial Systole b 0 . 4 sec iii Ventricular Systole c 0 . 1 sec iv Cardiac Diastole d 0 . 8 sec e 0 . 3 sec

i - d , ii - c , iii - e , iv - b

i - d , ii - c , iii - b , iv - e

i - b , ii - c , iii - e , iv - d

i - d , ii - a , iii - e , iv - b

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'Dup' sound is produced during closure of

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Important Questions on Body Fluids and Circulation

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Eustachian valve.

HARD

Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Thebesian valve

EASY

Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Sketch and label the conducting system of human heart.

MEDIUM

Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Statement (S): The sinoatrial node is called 'Pace-maker'.

Reason (R): The sinoatrial node contains specialised cardiomyocytes and generates action potentials without any external stimuli.

The correct answer is

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Bicuspid valve

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Tricuspid valve

MEDIUM

Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Describe the structure of the heart of man with the help of a neat labelled diagram.

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Purkinje fibres are located in the following structure/s

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Assertion (A): Pulmonary aorta in human embryo communicates with systemic aorta by a thin vessel called ductus arteriosus.
Reason (R): In the heart of the human embryo, oxygenated and deoxygenated blood is completely separated.

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Sketch the internal structure of human heart. Label all the valves present in it. Mention the function of any one valve in the heart.

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Which of the following is associated with decrease in cardiac output?

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

What does the QRS wave indicate in ECG?

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Match the different types of heart given in column A with organisms given in column B. Choose the correct combination.

Column A	Column B
P. Neurogenic heart.	i. Human
Q. Bronchial heart.	ii. King crab
R. Pulmonary heart.	iii. Shark

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Write notes on the working of the heart of man.

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Match the items given in Column I with those in Column II and select the correct option given below:

	Column – I		Column – II
a.	Tricuspid valve	i.	Between left atrium and left ventricle.
b.	Bicuspid valve	ii.	Between the right ventricle and pulmonary artery.
c.	Semilunar valve	iii.	Between the right atrium and right ventricle.

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Which one of the following statements is correct?

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Match the following related to the cardiac cycle.

Column I		Column II
$(i)$	Cardiac Cycle	$(a)$	$0.2 \sec$
$(ii)$	Atrial Systole	$(b)$	$0.4 \sec$
$(iii)$	Ventricular Systole	$(c)$	$0.1 \sec$
$(iv)$	Cardiac Diastole	$(d)$	$0.8 \sec$
		$(e)$	$0.3 \sec$

MEDIUM

Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Assertion $(A)$ : Dub' is one of the sounds of the heart caused during a cardiac cycle.

Reason $(R)$ : The sound is due to closure of semilunar valves present at the bases of aortic arches.

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

How do parasympathetic neural signals affect the working of the heart?

'Dup' sound is produced during closure of

Important Questions on Body Fluids and Circulation

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